Brandon Chung on Instagram: "Rawdoggin boredom for 30 min to fix my attention span"

Practical Machinist on Instagram: "Time to ditch the analog refractometer! @rebecca.wolfinger shows how to calibrate your digital refractometer, measure the Brix and calculate your coolant concentration using the refractive index. Quick, accurate and no more guessing."

Amina Sarkar Bharat Ram on Instagram: "IYENGAR YOGA THE ROMAN WAY! “Patañjali describes the ways of concentration to be practised on several different points from within the body or from outside the body. Many people now stress the use of external objects such as candlelight or flowers. If one advocates external objects, why not concentrate within oneself, like looking into one’s throat, looking at one’s heart, looking between the eyebrows, etc.? Can’t one see the light of the intelligence, whic